I use it, last time out I purposelessly did not use the locker and was able to do everything I tried.

Sure is nice to engage the locker when necessary though.

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You bet... the locker now is more of a selling tool... since almost nobody knows what A-TRAC is or can do. Good to have backups and options... so leave the locker on there, but as you have discovered (as I have) the A-TRAC takes you everywhere that used to require the rear locker.

I just did (again), there is no poll choice to add. I have done polls on other forums, and as I said, I did click on the poll option here when I tried to post a poll with the thread... oh well, I will figure it out someday (or someone will be kind enough to give the magic answer)!

Toyota makes things difficult.
How bout 2 buttons. lsd and lock.? what more do you need?

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Basically they do... the VSC OFF button controls the limited slip system (TRAC and AUTO LSD) and the A-TRAC button is provides the traction of front and rear lockers in L4.... really an ultra strong LSD that basically locks tire rotation across the axle, with the brakes.

There is in addition the true diff. locker on the rear, as well... a third button.

Yea I have a sport, this picture is from the internet. Sorry for hacking this thread, I thought that one of those switches was A-trac..
Sorry again and thanks for the explaination David.

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No worries eltano... this is a public forum, and like me, you came here for answers!

I would go to your dealer and get an owner's manual ASAP... You do have TRAC and if you do the 'yellow wire mod', you can get the TRAC to work in L4. It isn't as strong as A-TRAC, but it is way more traction than the front open differential (which is all we have in L4 without A-TRAC).